Lady Gaga and Tony Bennett performed their hit duet 'Cheek to Cheek,' at the 2015 Grammy Awards and, as they are wont to do, totally killed it. Gaga was totally old school glamorous, decked out in a sparkly, long black dress, and Tony looked totally dapper in his black suit.

One of the things we love about Gaga is the fact that she can pull off any genre. From pop to rock to jazz, she has the type of vocal prowess that can do justice to pretty much anything. And holding your own with a bonafide living legend like Tony Bennett isn't exactly an easy task, but if anyone in the modern pop era can do it -- it's definitely Lady Gaga.

Because every now and then, people might forget that behind her outlandish costumes and personas, Lady Gaga is first and foremost a powerhouse vocalist with the talent to back up the image -- something she reminded everyone of during tonight's (Feb. 8) performance.

Check out the video above to see Lady Gaga and Tony Bennett totally kill it while performing 'Cheek to Cheek'!